package com.lemon.funplus.video;

import java.io.IOException;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnErrorListener;
import android.net.Uri;
import android.os.AsyncTask;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.RelativeLayout;

import com.lemon.funplus.ulti.BaseEngine;
import com.lemon.funplus.youtube.VideoId;
import com.lemon.funplus.youtube.YouTubeId;
import com.lemon.funplus.youtube.YouTubeUtility;

public class FullScreenVideoStreamView extends SurfaceView implements VideoControllerStreamView.MediaPlayerControl {

	private String TAG = "VideoView";

	public static final String SCHEME_YOUTUBE_VIDEO = "ytv";
	public final static String YOUTUBE_VIDEO_INFORMATION_URL = "http://www.youtube.com/get_video_info?&video_id=";

	/**
	 * Background task on which all of the interaction with YouTube is done
	 */
	protected QueryYouTubeTask mQueryYouTubeTask;
	String lYouTubeFmtQuality;
	protected String mVideoId = null;
	// settable by the client
	private Uri mUri;
	private int mDuration;

	// all possible internal states
	private static final int STATE_ERROR = -1;
	private static final int STATE_IDLE = 0;
	private static final int STATE_PREPARING = 1;
	private static final int STATE_PREPARED = 2;
	private static final int STATE_PLAYING = 3;
	private static final int STATE_PAUSED = 4;
	private static final int STATE_PLAYBACK_COMPLETED = 5;

	// mCurrentState is a VideoView object's current state.
	// mTargetState is the state that a method caller intends to reach.
	// For instance, regardless the VideoView object's current state,
	// calling pause() intends to bring the object to a target state
	// of STATE_PAUSED.
	private int mCurrentState = STATE_IDLE;
	private int mTargetState = STATE_IDLE;

	// All the stuff we need for playing and showing a video
	private SurfaceHolder mSurfaceHolder = null;
	private MediaPlayer mMediaPlayer = null;
	private int mVideoWidth;
	private int mVideoHeight;
	private int mSurfaceWidth;
	private int mSurfaceHeight;
	public VideoControllerStreamView mMediaController;
	private OnCompletionListener mOnCompletionListener;
	private MediaPlayer.OnPreparedListener mOnPreparedListener;
	private int mCurrentBufferPercentage;
	private OnErrorListener mOnErrorListener;
	private int mSeekWhenPrepared; // recording the seek position while
									// preparing
	private boolean mCanPause;
	private boolean mCanSeekBack;
	private boolean mCanSeekForward;
	private boolean mIsFullScreen;

	private int mForceHeight = 0;
	private int mForceWidth = 0;

	private Context mContext;

	private ToggleFullScreen mOnToggleFullScreen;

	public void setOnToggleFullScreen(ToggleFullScreen mToggleFullScreen) {
		this.mOnToggleFullScreen = mToggleFullScreen;
	}

	public void setFullScreen(boolean isFullScreen) {
		mIsFullScreen = isFullScreen;
		mMediaController.updateFullScreen();
	}

	public interface ToggleFullScreen {
		void onToggleFullScreen(boolean isFullScreen);
	}

	public FullScreenVideoStreamView(Context context) {
		super(context);
		this.mContext = context;
		initVideoView();
	}

	public FullScreenVideoStreamView(Context context, AttributeSet attrs) {
		this(context, attrs, 0);
		this.mContext = context;
		initVideoView();
	}

	public FullScreenVideoStreamView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		this.mContext = context;
		initVideoView();
	}

	public void setDimensions(int w, int h) {
		this.mForceHeight = h;
		this.mForceWidth = w;
		// if(mMediaController!=null)
		// mMediaController.setDimensions(mForceWidth, mForceHeight);
	}

	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		setMeasuredDimension(mForceWidth, mForceHeight);
	}

	public int resolveAdjustedSize(int desiredSize, int measureSpec) {
		int result = desiredSize;
		int specMode = MeasureSpec.getMode(measureSpec);
		int specSize = MeasureSpec.getSize(measureSpec);

		switch (specMode) {
		case MeasureSpec.UNSPECIFIED:
			/*
			 * Parent says we can be as big as we want. Just don't be larger
			 * than max size imposed on ourselves.
			 */
			result = desiredSize;
			break;

		case MeasureSpec.AT_MOST:
			/*
			 * Parent says we can be as big as we want, up to specSize. Don't be
			 * larger than specSize, and don't be larger than the max size
			 * imposed on ourselves.
			 */
			result = Math.min(desiredSize, specSize);
			break;

		case MeasureSpec.EXACTLY:
			// No choice. Do what we are told.
			result = specSize;
			break;
		}
		return result;
	}

	@SuppressWarnings("deprecation")
	private void initVideoView() {
		mVideoWidth = 0;
		mVideoHeight = 0;
		getHolder().addCallback(mSHCallback);
		getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
		setFocusable(true);
		setFocusableInTouchMode(true);
		requestFocus();
		mCurrentState = STATE_IDLE;
		mTargetState = STATE_IDLE;
	}

	public void setVideoPath(String path) {
		setVideoURI(Uri.parse(path));
	}

	public void setVideoURI(Uri uri) {
		mUri = uri;
		mSeekWhenPrepared = 0;
		openVideo();
		requestLayout();
		invalidate();
	}

	public void setYoutubeId(String lYouTubeFmtQuality, String youtubeid) {
		this.lYouTubeFmtQuality = lYouTubeFmtQuality;
		Uri lVideoIdUri = Uri.parse("ytv://" + youtubeid);

		if (lVideoIdUri == null) {
			Log.i(this.getClass().getSimpleName(), "No video ID was specified in the intent.  Closing video activity.");
			// finish();
		}
		String lVideoSchemeStr = lVideoIdUri.getScheme();
		String lVideoIdStr = lVideoIdUri.getEncodedSchemeSpecificPart();
		if (lVideoIdStr == null) {
			Log.i(this.getClass().getSimpleName(), "No video ID was specified in the intent.  Closing video activity.");
			// finish();
		}
		if (lVideoIdStr.startsWith("//")) {
			if (lVideoIdStr.length() > 2) {
				lVideoIdStr = lVideoIdStr.substring(2);
			} else {
				Log.i(this.getClass().getSimpleName(), "No video ID was specified in the intent.  Closing video activity.");
				// finish();
			}
		}

		YouTubeId lYouTubeId = null;
		if (lVideoSchemeStr != null && lVideoSchemeStr.equalsIgnoreCase(SCHEME_YOUTUBE_VIDEO))
			lYouTubeId = new VideoId(lVideoIdStr);

		if (lYouTubeId == null) {
			Log.i(this.getClass().getSimpleName(), "Unable to extract video ID from the intent.  Closing video activity.");
			// finish();
		} else
			mQueryYouTubeTask = (QueryYouTubeTask) new QueryYouTubeTask().execute(lYouTubeId);
	}

	public void stopPlayback() {
		if (mMediaPlayer != null) {
			mMediaPlayer.stop();
			mMediaPlayer.release();
			mMediaPlayer = null;
			mCurrentState = STATE_IDLE;
			mTargetState = STATE_IDLE;
		}
	}

	private void openVideo() {
		if (mUri == null || mSurfaceHolder == null) {
			// not ready for playback just yet, will try again later
			return;
		}
		// Tell the music playback service to pause
		// TODO: these constants need to be published somewhere in the
		// framework.
		Intent i = new Intent("com.android.music.musicservicecommand");
		i.putExtra("command", "pause");
		mContext.sendBroadcast(i);

		// we shouldn't clear the target state, because somebody might have
		// called start() previously
		release(false);
		try {
			mMediaPlayer = new MediaPlayer();
			mMediaPlayer.setOnPreparedListener(mPreparedListener);
//			mMediaPlayer.setOnVideoSizeChangedListener(mSizeChangedListener);
			mDuration = -1;
			mMediaPlayer.setOnCompletionListener(mCompletionListener);
			mMediaPlayer.setOnErrorListener(mErrorListener);
			mMediaPlayer.setOnBufferingUpdateListener(mBufferingUpdateListener);
			mCurrentBufferPercentage = 0;
			mMediaPlayer.setDataSource(mContext, mUri);
			mMediaPlayer.setDisplay(mSurfaceHolder);
			mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
			mMediaPlayer.setScreenOnWhilePlaying(true);
			mMediaPlayer.prepareAsync();
			// we don't set the target state here either, but preserve the
			// target state that was there before.
			mCurrentState = STATE_PREPARING;
			attachMediaController();
		} catch (IOException ex) {
			Log.w(TAG, "Unable to open content: " + mUri, ex);
			mCurrentState = STATE_ERROR;
			mTargetState = STATE_ERROR;
			mErrorListener.onError(mMediaPlayer, MediaPlayer.MEDIA_ERROR_UNKNOWN, 0);
			return;
		} catch (IllegalArgumentException ex) {
			Log.w(TAG, "Unable to open content: " + mUri, ex);
			mCurrentState = STATE_ERROR;
			mTargetState = STATE_ERROR;
			mErrorListener.onError(mMediaPlayer, MediaPlayer.MEDIA_ERROR_UNKNOWN, 0);
			return;
		}
	}

	public void setMediaController(VideoControllerStreamView controller) {
		if (mMediaController != null) {
			mMediaController.hide();
		}
		mMediaController = controller;
		attachMediaController();
	}

	private void attachMediaController() {
		if (mMediaPlayer != null && mMediaController != null) {
			mMediaController.setMediaPlayer(this);
			View anchorView = this.getParent() instanceof View ? (View) this.getParent() : this;
			mMediaController.setAnchorView((ViewGroup) anchorView);
			mMediaController.setEnabled(isInPlaybackState());
			mMediaController.showTitle();
		}
	}

//	MediaPlayer.OnVideoSizeChangedListener mSizeChangedListener = new MediaPlayer.OnVideoSizeChangedListener() {
//		public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
//			mVideoWidth = mp.getVideoWidth();
//			mVideoHeight = mp.getVideoHeight();
//			if (mVideoWidth != 0 && mVideoHeight != 0) {
//				getHolder().setFixedSize(mVideoWidth, mVideoHeight);
//			}
//		}
//	};

	MediaPlayer.OnPreparedListener mPreparedListener = new MediaPlayer.OnPreparedListener() {
		public void onPrepared(MediaPlayer mp) {
			mCurrentState = STATE_PREPARED;

			mCanPause = mCanSeekForward = mCanSeekForward = true;

			if (mOnPreparedListener != null) {
				mOnPreparedListener.onPrepared(mMediaPlayer);
			}
			if (mMediaController != null) {
				mMediaController.setEnabled(true);
			}
			mVideoWidth = mp.getVideoWidth();
			mVideoHeight = mp.getVideoHeight();

			int seekToPosition = mSeekWhenPrepared; // mSeekWhenPrepared may be
													// changed after seekTo()
													// call
			if (seekToPosition != 0) {
				seekTo(seekToPosition);
			}
			
			if (mVideoWidth != 0 && mVideoHeight != 0) {
				// Log.i("@@@@", "video size: " + mVideoWidth +"/"+mVideoHeight);
				getHolder().setFixedSize(mVideoWidth, mVideoHeight);
				if (mSurfaceWidth == mVideoWidth && mSurfaceHeight == mVideoHeight) {
					// We didn't actually change the size (it was already at the size
					// we need), so we won't get a "surface changed" callback,
					// so start the video here instead of in the callback.
					if (mTargetState == STATE_PLAYING) {
						start();
						if (mMediaController != null) {
							mMediaController.show();
						}
					} else if (!isPlaying() && (seekToPosition != 0 || getCurrentPosition() > 0)) {
						if (mMediaController != null) {
							// Show the media controls when we're paused into a
							// video and make 'em stick.
							mMediaController.show(0);
						}
					}
				}
			} else {
				// We don't know the video size yet, but should start anyway.
				// The video size might be reported to us later.
				if (mTargetState == STATE_PLAYING) {
					start();
				}
			}
		}
	};

	private OnCompletionListener mCompletionListener = new OnCompletionListener() {
		public void onCompletion(MediaPlayer mp) {
			mCurrentState = STATE_PLAYBACK_COMPLETED;
			mTargetState = STATE_PLAYBACK_COMPLETED;
			if (mMediaController != null) {
				mMediaController.hide();
			}
			if (mOnCompletionListener != null) {
				mOnCompletionListener.onCompletion(mMediaPlayer);
			}
		}
	};

	private OnErrorListener mErrorListener = new OnErrorListener() {
		public boolean onError(MediaPlayer mp, int framework_err, int impl_err) {
			Log.d(TAG, "Error: " + framework_err + "," + impl_err);
			mCurrentState = STATE_ERROR;
			mTargetState = STATE_ERROR;
			if (mMediaController != null) {
				mMediaController.error();
			}

			/* If an error handler has been supplied, use it and finish. */
			if (mOnErrorListener != null) {
				if (mOnErrorListener.onError(mMediaPlayer, framework_err, impl_err)) {
					return true;
				}
			}

			/*
			 * Otherwise, pop up an error dialog so the user knows that
			 * something bad has happened. Only try and pop up the dialog if
			 * we're attached to a window. When we're going away and no longer
			 * have a window, don't bother showing the user an error.
			 */
			if (getWindowToken() != null) {
				int messageId;

				if (framework_err == MediaPlayer.MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK) {
					messageId = android.R.string.VideoView_error_text_invalid_progressive_playback;
				} else {
					messageId = android.R.string.VideoView_error_text_unknown;
				}

				new AlertDialog.Builder(mContext).setTitle(android.R.string.VideoView_error_title).setMessage(messageId)
						.setPositiveButton(android.R.string.VideoView_error_button, new DialogInterface.OnClickListener() {
							public void onClick(DialogInterface dialog, int whichButton) {
								/*
								 * If we get here, there is no onError listener,
								 * so at least inform them that the video is
								 * over.
								 */
								if (mOnCompletionListener != null) {
									mOnCompletionListener.onCompletion(mMediaPlayer);
								}
							}
						}).setCancelable(false).show();
			}
			return true;
		}
	};

	private MediaPlayer.OnBufferingUpdateListener mBufferingUpdateListener = new MediaPlayer.OnBufferingUpdateListener() {
		public void onBufferingUpdate(MediaPlayer mp, int percent) {
			mCurrentBufferPercentage = percent;
		}
	};

	/**
	 * Register a callback to be invoked when the media file is loaded and ready
	 * to go.
	 * 
	 * @param l
	 *            The callback that will be run
	 */
	public void setOnPreparedListener(MediaPlayer.OnPreparedListener l) {
		mOnPreparedListener = l;
	}

	/**
	 * Register a callback to be invoked when the end of a media file has been
	 * reached during playback.
	 * 
	 * @param l
	 *            The callback that will be run
	 */
	public void setOnCompletionListener(OnCompletionListener l) {
		mOnCompletionListener = l;
	}

	/**
	 * Register a callback to be invoked when an error occurs during playback or
	 * setup. If no listener is specified, or if the listener returned false,
	 * VideoView will inform the user of any errors.
	 * 
	 * @param l
	 *            The callback that will be run
	 */
	public void setOnErrorListener(OnErrorListener l) {
		mOnErrorListener = l;
	}

	SurfaceHolder.Callback mSHCallback = new SurfaceHolder.Callback() {
		public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
			mSurfaceWidth = w;
			mSurfaceHeight = h;
			boolean isValidState = (mTargetState == STATE_PLAYING);
			boolean hasValidSize = (mVideoWidth == w && mVideoHeight == h);
			if (mMediaPlayer != null && isValidState && hasValidSize) {
				if (mSeekWhenPrepared != 0) {
					seekTo(mSeekWhenPrepared);
				}
				start();
				if (mMediaController != null) {
					mMediaController.show();
				}
			}
		}

		public void surfaceCreated(SurfaceHolder holder) {
			mSurfaceHolder = holder;
			openVideo();
		}

		public void surfaceDestroyed(SurfaceHolder holder) {
			// after we return from this we can't use the surface any more
			mSurfaceHolder = null;
			if (mMediaController != null)
				mMediaController.hide();
			release(true);
		}
	};

	/*
	 * release the media player in any state
	 */
	private void release(boolean cleartargetstate) {
		if (mMediaPlayer != null) {
			mMediaPlayer.reset();
			mMediaPlayer.release();
			mMediaPlayer = null;
			mCurrentState = STATE_IDLE;
			if (cleartargetstate) {
				mTargetState = STATE_IDLE;
			}
		}
	}

	@SuppressLint("ClickableViewAccessibility")
	@Override
	public boolean onTouchEvent(MotionEvent ev) {
		if (isInPlaybackState() && mMediaController != null) {
			toggleMediaControlsVisiblity();
		}
		return false;
	}

	@Override
	public boolean onTrackballEvent(MotionEvent ev) {
		if (isInPlaybackState() && mMediaController != null) {
			toggleMediaControlsVisiblity();
		}
		return false;
	}

	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event) {
		boolean isKeyCodeSupported = keyCode != KeyEvent.KEYCODE_BACK && keyCode != KeyEvent.KEYCODE_VOLUME_UP && keyCode != KeyEvent.KEYCODE_VOLUME_DOWN
				&& keyCode != KeyEvent.KEYCODE_MENU && keyCode != KeyEvent.KEYCODE_CALL && keyCode != KeyEvent.KEYCODE_ENDCALL;
		if (isInPlaybackState() && isKeyCodeSupported && mMediaController != null) {
			if (keyCode == KeyEvent.KEYCODE_HEADSETHOOK || keyCode == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE) {
				if (mMediaPlayer.isPlaying()) {
					pause();
					mMediaController.show();
				} else {
					start();
					mMediaController.hide();
				}
				return true;
			} else if (keyCode == KeyEvent.KEYCODE_MEDIA_STOP && mMediaPlayer.isPlaying()) {
				pause();
				mMediaController.show();
			} else {
				toggleMediaControlsVisiblity();
			}
		}

		return super.onKeyDown(keyCode, event);
	}

	private void toggleMediaControlsVisiblity() {
		if (mMediaController.isShowing()) {
			mMediaController.hide();
		} else {
			mMediaController.show();
		}
	}

	public void start() {
		if (isInPlaybackState()) {
			mMediaPlayer.start();
			mCurrentState = STATE_PLAYING;
		}
		mTargetState = STATE_PLAYING;
	}

	public void pause() {
		if (isInPlaybackState()) {
			if (mMediaPlayer.isPlaying()) {
				mMediaPlayer.pause();
				mCurrentState = STATE_PAUSED;
			}
		}
		mTargetState = STATE_PAUSED;
	}

	// cache duration as mDuration for faster access
	public int getDuration() {
		if (isInPlaybackState()) {
			if (mDuration > 0) {
				return mDuration;
			}
			mDuration = mMediaPlayer.getDuration();
			return mDuration;
		}
		mDuration = -1;
		return mDuration;
	}

	public int getCurrentPosition() {
		if (isInPlaybackState()) {
			return mMediaPlayer.getCurrentPosition();
		}
		return 0;
	}

	public void seekTo(int msec) {
		if (isInPlaybackState()) {
			mMediaPlayer.seekTo(msec);
			mSeekWhenPrepared = 0;
		} else {
			mSeekWhenPrepared = msec;
		}
	}

	public boolean isPlaying() {
		return isInPlaybackState() && mMediaPlayer.isPlaying();
	}

	public int getBufferPercentage() {
		if (mMediaPlayer != null) {
			return mCurrentBufferPercentage;
		}
		return 0;
	}

	private boolean isInPlaybackState() {
		return (mMediaPlayer != null && mCurrentState != STATE_ERROR && mCurrentState != STATE_IDLE && mCurrentState != STATE_PREPARING);
	}

	public boolean canPause() {
		return mCanPause;
	}

	public boolean canSeekBackward() {
		return mCanSeekBack;
	}

	public boolean canSeekForward() {
		return mCanSeekForward;
	}

	@Override
	public boolean isFullScreen() {
		return mIsFullScreen;
	}

	@Override
	public void toggleFullScreen() {
		mIsFullScreen = !mIsFullScreen;
		if (mOnToggleFullScreen != null) {
			mOnToggleFullScreen.onToggleFullScreen(mIsFullScreen);
		}
	}

	public void suspend() {
		release(false);
	}

	public void resume() {
		openVideo();
	}

	/**
	 * Task to figure out details by calling out to YouTube GData API. We only
	 * use public methods that don't require authentication.
	 */
	private class QueryYouTubeTask extends AsyncTask<YouTubeId, String, Uri> {

		private boolean mShowedError = false;

		@Override
		protected Uri doInBackground(YouTubeId... pParams) {
			String lUriStr = null;
			String lYouTubeVideoId = null;

			if (isCancelled())
				return null;

			try {
				if (pParams[0] instanceof VideoId) {
					lYouTubeVideoId = pParams[0].getId();
				}
				mVideoId = lYouTubeVideoId;
				if (isCancelled())
					return null;

				// //////////////////////////////////
				// calculate the actual URL of the video, encoded with proper
				// YouTube token
				lUriStr = YouTubeUtility.calculateYouTubeUrl(lYouTubeFmtQuality, true, lYouTubeVideoId);
				if (isCancelled())
					return null;
			} catch (Exception e) {
				Log.e(this.getClass().getSimpleName(), "Error occurred while retrieving information from YouTube.", e);
			}

			if (lUriStr != null) {
//				BaseEngine.showLogformLongString("youtubeurl", lUriStr);
				return Uri.parse(lUriStr);
			} else {
				return null;
			}
		}

		@Override
		protected void onPostExecute(Uri pResult) {
			super.onPostExecute(pResult);

			try {
				if (isCancelled())
					return;

				if (pResult == null) {
					throw new RuntimeException("Invalid NULL Url.");
				}
				mUri = pResult;
				mSeekWhenPrepared = 0;
				openVideo();
				requestLayout();
				invalidate();
			} catch (Exception e) {
				Log.e(this.getClass().getSimpleName(), "Error playing video!", e);
				if (!mShowedError) {
					// showErrorAlert();
				}
			}
		}
	}

}